import java.util.Scanner;

public class Test1 {
    public static void main(String[] args) {
        System.out.println("输入整数：");
        Scanner sc=new Scanner(System.in);
        long n=sc.nextLong();

    }public long oper(long n) {
        long gcd=0;
        long x,y;

        return gcd;
    }
}


